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MicroRNAs (miRNAs) are small noncoding RNAs that regulate vast networks of genes that share miRNA target sequences. To examine the physiologic effects of an individual miRNA-mRNA interaction in vivo, we generated mice that carry a mutation in the putative microRNA-155 (miR-155) binding site in the 3'-untranslated region of activation-induced cytidine deaminase (AID), designated Aicda(155) mice. AID is required for immunoglobulin gene diversification in B lymphocytes, but it also promotes chromosomal translocations. Aicda(155) caused an increase in steady-state Aicda mRNA and protein amounts by increasing the half-life of the mRNA, resulting in a high degree of Myc-Igh translocations. A similar but more pronounced translocation phenotype was also found in miR-155-deficient mice. Our experiments indicate that miR-155 can act as a tumor suppressor by reducing potentially oncogenic translocations generated by AID.
Pubmed ID: 18455451
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Software application with data analysis tools and spreadsheet templates to track and visualize data. It is used to manage and process data.
View all literature mentionsSoftware package that integrates genome wide genetic variation with epigenetic data to identify collaborative transcription factor pairs. Optimized to work with chromatin accessibility assays such as ATAC-seq or DNase I hypersensitivity, as well as transcription factor binding data collected by ChIP-seq. Used to identify combinations of cell type specific transcription factors while simultaneously interpreting functional effects of non-coding genetic variation.
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